Let p = {1, 3, 5, 7} , q = {3, 7, 9, 11} , r = {1, 5, 8, 11} then verify the following
1: p U q = q U p
2: ( p U q ) U r = p U (q U r )
3: p ∩ ( q ∪ r ) = ( p ∩ q ) U ( p ∩ r )
please answer this i am waiting

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

2.5 milligrams is equivalent to how many grams